h2{
  text-align: center;
}
.people_list{
  margin: 20px auto;
  padding: 20px;
  width: 400px;
  border: 1px solid saddlebrown;
  li{
    height: 50px;
    line-height: 50px;
    .user-name{
      width: 300px;
      height: 28px;
    }
  }
}
